code: def test_policy_presentation():
      empty_policy = Policy(
          "EmptyPolicy", num_magnitude_bins=31, sub_policies=[]
      )
      empty_policy_str = str(empty_policy)
      assert "sub_policies=[]" in empty_policy_str, empty_policy_str
      assert "augmentations={}" in empty_policy_str, empty_policy_str
  
      def get_first_augment():
          @augmentation(mag_range=(100, 200))
          def clashing_name(data, _):
              return data
  
          return clashing_name
  
      def get_second_augment():
          @augmentation
          def clashing_name(data, _):
              return data
  
          return clashing_name
  
      one = get_first_augment()
      another = get_second_augment()
      sub_policies = [
          [(one, 0.1, 5), (another, 0.4, None)],
          [(another, 0.2, None), (one, 0.5, 2)],
          [(another, 0.7, None)],
      ]
      policy = Policy(
          name="DummyPolicy",
          num_magnitude_bins=11,
          sub_policies=sub_policies,
      )
      assert (
          policy.sub_policies[0][0][0] is policy.sub_policies[1][1][0]
      )
      assert (
          policy.sub_policies[0][1][0] is policy.sub_policies[1][0][0]
      )
      assert (
          policy.sub_policies[0][1][0] is policy.sub_policies[2][0][0]
      )
      assert len(sub_policies) == len(policy.sub_policies)
      for sub_pol, pol_sub_pol in zip(
          sub_policies, policy.sub_policies
      ):
          assert len(sub_pol) == len(pol_sub_pol)
          for (aug, p, mag), (pol_aug, pol_p, pol_mag) in zip(
              sub_pol, pol_sub_pol
          ):
              assert (
                  p == pol_p
              ), f"({aug}, {p}, {mag}), ({pol_aug}, {pol_p}, {pol_mag})"
              assert (
                  mag == pol_mag
              ), f"({aug}, {p}, {mag}), ({pol_aug}, {pol_p}, {pol_mag})"
  
      @augmentation
      def yet_another_aug(data, _):
          return data
  
      sub_policies = [
          [
              (yet_another_aug, 0.5, None),
              (one.augmentation(mag_range=(0, i)), 0.24, i),
          ]
          for i in range(1, 107)
      ]
      bigger_policy = Policy(
          name="BiggerPolicy",
          num_magnitude_bins=200,
          sub_policies=sub_policies,
      )
      for i, (first, second) in enumerate(bigger_policy.sub_policies):
          assert (
              first[0].name == "000__yet_another_aug"
          ), f"{second[0].name}"
          assert (
              second[0].name == f"{(i + 1):03}__clashing_name"
          ), f"{second[0].name}"
  
imports: import itertools
  import os
  import unittest
  import random
  import numpy
  from scipy.stats import chisquare
  from nose2.tools import params
  from nvidia.dali import fn, types
  from nvidia.dali import pipeline_def
  from nvidia.dali.auto_aug import auto_augment, augmentations
  from nvidia.dali.auto_aug.core import augmentation, Policy
  from test_utils import get_dali_extra_path, check_batch
  from nose_utils import assert_raises, assert_warns
label_desc: Use image node_id 7 for calling a global function with example usage: test_policy_presentation() and returns: clashing_name, clashing_name, data, data, data